Genotype-phenotype correlation, gonadal malignancy risk, gender preference, and testosterone/dihydrotestosterone ratio in steroid 5-alpha-reductase type 2 deficiency: a multicenter study from Turkey

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dc.contributor.authorAbaci, A.
dc.contributor.authorCatli, G.
dc.contributor.authorKirbiyik, O.
dc.contributor.authorSahin, N. M.
dc.contributor.authorAbali, Z. Y.
dc.contributor.authorUnal, E.
dc.contributor.authorSiklar, Z.
dc.date.accessioned2024-04-24T16:10:39Z
dc.date.available2024-04-24T16:10:39Z
dc.date.issued2019
dc.departmentDicle Üniversitesien_US
dc.description.abstractBackgroundStudies regarding genetic and clinical characteristics, gender preference, and gonadal malignancy rates for steroid 5-alpha-reductase type 2 deficiency (5-RD2) are limited and they were conducted on small number of patients.ObjectiveTo present genotype-phenotype correlation, gonadal malignancy risk, gender preference, and diagnostic sensitivity of serum testosterone/dihydrotestosterone (T/DHT) ratio in patients with 5-RD2.Materials and methodsPatients with variations in the SRD5A2 gene were included in the study. Demographic characteristics, phenotype, gender assignment, hormonal tests, molecular genetic data, and presence of gonadal malignancy were evaluated.ResultsA total of 85 patients were included in the study. Abnormality of the external genitalia was the most dominant phenotype (92.9%). Gender assignment was male in 58.8% and female in 29.4% of the patients, while it was uncertain for 11.8%. Fourteen patients underwent bilateral gonadectomy, and no gonadal malignancy was detected. The most frequent pathogenic variants were p.Ala65Pro (30.6%), p.Leu55Gln (16.5%), and p.Gly196Ser (15.3%). The p.Ala65Pro and p.Leu55Gln showed more undervirilization than the p.Gly196Ser. The diagnostic sensitivity of stimulated T/DHT ratio was higher than baseline serum T/DHT ratio, even in pubertal patients. The cut-off values yielding the best sensitivity for stimulated T/DHT ratio were8.5 for minipuberty,10 for prepuberty, and17 for puberty.ConclusionThere is no significant genotype-phenotype correlation in 5-RD2. Gonadal malignancy risk seems to be low. If genetic analysis is not available at the time of diagnosis, stimulated T/DHT ratio can be useful, especially if different cut-off values are utilized in accordance with the pubertal status.en_US
dc.description.sponsorshipTurkish Pediatric Endocrinology and Diabetes Society [032015]en_US
dc.description.sponsorshipThis work was supported financially by the Turkish Pediatric Endocrinology and Diabetes Society (Grant number: 032015).en_US
dc.identifier.doi10.1007/s40618-018-0940-y
dc.identifier.endpage470en_US
dc.identifier.issn0391-4097
dc.identifier.issn1720-8386
dc.identifier.issue4en_US
dc.identifier.pmid30132287
dc.identifier.scopus2-s2.0-85052065038
dc.identifier.scopusqualityQ1
dc.identifier.startpage453en_US
dc.identifier.urihttps://doi.org/10.1007/s40618-018-0940-y
dc.identifier.urihttps://hdl.handle.net/11468/15006
dc.identifier.volume42en_US
dc.identifier.wosWOS:000463248300011
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal of Endocrinological Investigation
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSrd5a2 Geneen_US
dc.subjectPhenotypeen_US
dc.subjectMalignancyen_US
dc.subjectGender Preferenceen_US
dc.subjectTestosteroneen_US
dc.subjectDihydrotestosterone Ratioen_US
dc.titleGenotype-phenotype correlation, gonadal malignancy risk, gender preference, and testosterone/dihydrotestosterone ratio in steroid 5-alpha-reductase type 2 deficiency: a multicenter study from Turkeyen_US
dc.titleGenotype-phenotype correlation, gonadal malignancy risk, gender preference, and testosterone/dihydrotestosterone ratio in steroid 5-alpha-reductase type 2 deficiency: a multicenter study from Turkey
dc.typeArticleen_US

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